77039701 has 2 divisors, whose sum is σ = 77039702. Its totient is φ = 77039700.

The previous prime is 77039657. The next prime is 77039713. The reversal of 77039701 is 10793077.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73977201 + 3062500 = 8601^2 + 1750^2 .

It is an emirp because it is prime and its reverse (10793077) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77039701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77039761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38519850 + 38519851.

It is an arithmetic number, because the mean of its divisors is an integer number (38519851).

Almost surely, 2^77039701 is an apocalyptic number.

It is an amenable number.

77039701 is a deficient number, since it is larger than the sum of its proper divisors (1).

77039701 is an equidigital number, since it uses as much as digits as its factorization.

77039701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9261, while the sum is 34.

The square root of 77039701 is about 8777.2262702975. The cubic root of 77039701 is about 425.5051911750.

The spelling of 77039701 in words is "seventy-seven million, thirty-nine thousand, seven hundred one".